1 /* PPC ELF support for BFD. 2 Copyright 1995, 1996, 1998, 2000, 2001, 2002, 2003, 2005, 2007, 2008, 3 2009, 2010 Free Software Foundation, Inc. 4 5 By Michael Meissner, Cygnus Support, <meissner@cygnus.com>, 6 from information in the System V Application Binary Interface, 7 PowerPC Processor Supplement and the PowerPC Embedded Application 8 Binary Interface (eabi). 9 10 This file is part of BFD, the Binary File Descriptor library. 11 12 This program is free software; you can redistribute it and/or modify 13 it under the terms of the GNU General Public License as published by 14 the Free Software Foundation; either version 3 of the License, or 15 (at your option) any later version. 16 17 This program is distributed in the hope that it will be useful, 18 but WITHOUT ANY WARRANTY; without even the implied warranty of 19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 GNU General Public License for more details. 21 22 You should have received a copy of the GNU General Public License 23 along with this program; if not, write to the Free Software 24 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 25 MA 02110-1301, USA. */ 26 27 /* This file holds definitions specific to the PPC ELF ABI. Note 28 that most of this is not actually implemented by BFD. */ 29 30 #ifndef _ELF_PPC_H 31 #define _ELF_PPC_H 32 33 #include "elf/reloc-macros.h" 34 35 /* Relocations. */ 36 START_RELOC_NUMBERS (elf_ppc_reloc_type) 37 RELOC_NUMBER (R_PPC_NONE, 0) 38 RELOC_NUMBER (R_PPC_ADDR32, 1) 39 RELOC_NUMBER (R_PPC_ADDR24, 2) 40 RELOC_NUMBER (R_PPC_ADDR16, 3) 41 RELOC_NUMBER (R_PPC_ADDR16_LO, 4) 42 RELOC_NUMBER (R_PPC_ADDR16_HI, 5) 43 RELOC_NUMBER (R_PPC_ADDR16_HA, 6) 44 RELOC_NUMBER (R_PPC_ADDR14, 7) 45 RELOC_NUMBER (R_PPC_ADDR14_BRTAKEN, 8) 46 RELOC_NUMBER (R_PPC_ADDR14_BRNTAKEN, 9) 47 RELOC_NUMBER (R_PPC_REL24, 10) 48 RELOC_NUMBER (R_PPC_REL14, 11) 49 RELOC_NUMBER (R_PPC_REL14_BRTAKEN, 12) 50 RELOC_NUMBER (R_PPC_REL14_BRNTAKEN, 13) 51 RELOC_NUMBER (R_PPC_GOT16, 14) 52 RELOC_NUMBER (R_PPC_GOT16_LO, 15) 53 RELOC_NUMBER (R_PPC_GOT16_HI, 16) 54 RELOC_NUMBER (R_PPC_GOT16_HA, 17) 55 RELOC_NUMBER (R_PPC_PLTREL24, 18) 56 RELOC_NUMBER (R_PPC_COPY, 19) 57 RELOC_NUMBER (R_PPC_GLOB_DAT, 20) 58 RELOC_NUMBER (R_PPC_JMP_SLOT, 21) 59 RELOC_NUMBER (R_PPC_RELATIVE, 22) 60 RELOC_NUMBER (R_PPC_LOCAL24PC, 23) 61 RELOC_NUMBER (R_PPC_UADDR32, 24) 62 RELOC_NUMBER (R_PPC_UADDR16, 25) 63 RELOC_NUMBER (R_PPC_REL32, 26) 64 RELOC_NUMBER (R_PPC_PLT32, 27) 65 RELOC_NUMBER (R_PPC_PLTREL32, 28) 66 RELOC_NUMBER (R_PPC_PLT16_LO, 29) 67 RELOC_NUMBER (R_PPC_PLT16_HI, 30) 68 RELOC_NUMBER (R_PPC_PLT16_HA, 31) 69 RELOC_NUMBER (R_PPC_SDAREL16, 32) 70 RELOC_NUMBER (R_PPC_SECTOFF, 33) 71 RELOC_NUMBER (R_PPC_SECTOFF_LO, 34) 72 RELOC_NUMBER (R_PPC_SECTOFF_HI, 35) 73 RELOC_NUMBER (R_PPC_SECTOFF_HA, 36) 74 RELOC_NUMBER (R_PPC_ADDR30, 37) 75 76 #ifndef RELOC_MACROS_GEN_FUNC 77 /* Fake relocations for branch stubs, only used internally by ld. */ 78 RELOC_NUMBER (R_PPC_RELAX, 48) 79 RELOC_NUMBER (R_PPC_RELAX_PLT, 49) 80 RELOC_NUMBER (R_PPC_RELAX_PLTREL24, 50) 81 #endif 82 83 /* Relocs added to support TLS. */ 84 RELOC_NUMBER (R_PPC_TLS, 67) 85 RELOC_NUMBER (R_PPC_DTPMOD32, 68) 86 RELOC_NUMBER (R_PPC_TPREL16, 69) 87 RELOC_NUMBER (R_PPC_TPREL16_LO, 70) 88 RELOC_NUMBER (R_PPC_TPREL16_HI, 71) 89 RELOC_NUMBER (R_PPC_TPREL16_HA, 72) 90 RELOC_NUMBER (R_PPC_TPREL32, 73) 91 RELOC_NUMBER (R_PPC_DTPREL16, 74) 92 RELOC_NUMBER (R_PPC_DTPREL16_LO, 75) 93 RELOC_NUMBER (R_PPC_DTPREL16_HI, 76) 94 RELOC_NUMBER (R_PPC_DTPREL16_HA, 77) 95 RELOC_NUMBER (R_PPC_DTPREL32, 78) 96 RELOC_NUMBER (R_PPC_GOT_TLSGD16, 79) 97 RELOC_NUMBER (R_PPC_GOT_TLSGD16_LO, 80) 98 RELOC_NUMBER (R_PPC_GOT_TLSGD16_HI, 81) 99 RELOC_NUMBER (R_PPC_GOT_TLSGD16_HA, 82) 100 RELOC_NUMBER (R_PPC_GOT_TLSLD16, 83) 101 RELOC_NUMBER (R_PPC_GOT_TLSLD16_LO, 84) 102 RELOC_NUMBER (R_PPC_GOT_TLSLD16_HI, 85) 103 RELOC_NUMBER (R_PPC_GOT_TLSLD16_HA, 86) 104 RELOC_NUMBER (R_PPC_GOT_TPREL16, 87) 105 RELOC_NUMBER (R_PPC_GOT_TPREL16_LO, 88) 106 RELOC_NUMBER (R_PPC_GOT_TPREL16_HI, 89) 107 RELOC_NUMBER (R_PPC_GOT_TPREL16_HA, 90) 108 RELOC_NUMBER (R_PPC_GOT_DTPREL16, 91) 109 RELOC_NUMBER (R_PPC_GOT_DTPREL16_LO, 92) 110 RELOC_NUMBER (R_PPC_GOT_DTPREL16_HI, 93) 111 RELOC_NUMBER (R_PPC_GOT_DTPREL16_HA, 94) 112 RELOC_NUMBER (R_PPC_TLSGD, 95) 113 RELOC_NUMBER (R_PPC_TLSLD, 96) 114 115 /* The remaining relocs are from the Embedded ELF ABI, and are not 116 in the SVR4 ELF ABI. */ 117 RELOC_NUMBER (R_PPC_EMB_NADDR32, 101) 118 RELOC_NUMBER (R_PPC_EMB_NADDR16, 102) 119 RELOC_NUMBER (R_PPC_EMB_NADDR16_LO, 103) 120 RELOC_NUMBER (R_PPC_EMB_NADDR16_HI, 104) 121 RELOC_NUMBER (R_PPC_EMB_NADDR16_HA, 105) 122 RELOC_NUMBER (R_PPC_EMB_SDAI16, 106) 123 RELOC_NUMBER (R_PPC_EMB_SDA2I16, 107) 124 RELOC_NUMBER (R_PPC_EMB_SDA2REL, 108) 125 RELOC_NUMBER (R_PPC_EMB_SDA21, 109) 126 RELOC_NUMBER (R_PPC_EMB_MRKREF, 110) 127 RELOC_NUMBER (R_PPC_EMB_RELSEC16, 111) 128 RELOC_NUMBER (R_PPC_EMB_RELST_LO, 112) 129 RELOC_NUMBER (R_PPC_EMB_RELST_HI, 113) 130 RELOC_NUMBER (R_PPC_EMB_RELST_HA, 114) 131 RELOC_NUMBER (R_PPC_EMB_BIT_FLD, 115) 132 RELOC_NUMBER (R_PPC_EMB_RELSDA, 116) 133 134 /* PowerPC VLE relocations. */ 135 RELOC_NUMBER (R_PPC_VLE_REL8, 216) 136 RELOC_NUMBER (R_PPC_VLE_REL15, 217) 137 RELOC_NUMBER (R_PPC_VLE_REL24, 218) 138 RELOC_NUMBER (R_PPC_VLE_LO16A, 219) 139 RELOC_NUMBER (R_PPC_VLE_LO16D, 220) 140 RELOC_NUMBER (R_PPC_VLE_HI16A, 221) 141 RELOC_NUMBER (R_PPC_VLE_HI16D, 222) 142 RELOC_NUMBER (R_PPC_VLE_HA16A, 223) 143 RELOC_NUMBER (R_PPC_VLE_HA16D, 224) 144 RELOC_NUMBER (R_PPC_VLE_SDA21, 225) 145 RELOC_NUMBER (R_PPC_VLE_SDA21_LO, 226) 146 RELOC_NUMBER (R_PPC_VLE_SDAREL_LO16A, 227) 147 RELOC_NUMBER (R_PPC_VLE_SDAREL_LO16D, 228) 148 RELOC_NUMBER (R_PPC_VLE_SDAREL_HI16A, 229) 149 RELOC_NUMBER (R_PPC_VLE_SDAREL_HI16D, 230) 150 RELOC_NUMBER (R_PPC_VLE_SDAREL_HA16A, 231) 151 RELOC_NUMBER (R_PPC_VLE_SDAREL_HA16D, 232) 152 153 /* Support STT_GNU_IFUNC plt calls. */ 154 RELOC_NUMBER (R_PPC_IRELATIVE, 248) 155 156 /* These are GNU extensions used in PIC code sequences. */ 157 RELOC_NUMBER (R_PPC_REL16, 249) 158 RELOC_NUMBER (R_PPC_REL16_LO, 250) 159 RELOC_NUMBER (R_PPC_REL16_HI, 251) 160 RELOC_NUMBER (R_PPC_REL16_HA, 252) 161 162 /* These are GNU extensions to enable C++ vtable garbage collection. */ 163 RELOC_NUMBER (R_PPC_GNU_VTINHERIT, 253) 164 RELOC_NUMBER (R_PPC_GNU_VTENTRY, 254) 165 166 /* This is a phony reloc to handle any old fashioned TOC16 references 167 that may still be in object files. */ 168 RELOC_NUMBER (R_PPC_TOC16, 255) 169 170 END_RELOC_NUMBERS (R_PPC_max) 171 172 #define IS_PPC_TLS_RELOC(R) \ 173 ((R) >= R_PPC_TLS && (R) <= R_PPC_GOT_DTPREL16_HA) 174 175 /* Specify the value of _GLOBAL_OFFSET_TABLE_. */ 176 #define DT_PPC_GOT (DT_LOPROC) 177 178 /* Specify that tls descriptors should be optimized. */ 179 #define DT_PPC_TLSOPT (DT_LOPROC + 1) 180 181 /* Processor specific flags for the ELF header e_flags field. */ 182 183 #define EF_PPC_EMB 0x80000000 /* PowerPC embedded flag. */ 184 185 #define EF_PPC_RELOCATABLE 0x00010000 /* PowerPC -mrelocatable flag. */ 186 #define EF_PPC_RELOCATABLE_LIB 0x00008000 /* PowerPC -mrelocatable-lib flag. */ 187 188 /* Processor specific program headers, p_flags field. */ 189 #define PF_PPC_VLE 0x10000000 /* PowerPC VLE. */ 190 191 /* Processor specific section headers, sh_flags field. */ 192 #define SHF_PPC_VLE 0x10000000 /* PowerPC VLE text section. */ 193 194 /* Processor specific section headers, sh_type field. */ 195 196 #define SHT_ORDERED SHT_HIPROC /* Link editor is to sort the \ 197 entries in this section \ 198 based on the address \ 199 specified in the associated \ 200 symbol table entry. */ 201 202 /* Object attribute tags. */ 203 enum 204 { 205 /* 0-3 are generic. */ 206 Tag_GNU_Power_ABI_FP = 4, /* Value 1 for hard-float, 2 for 207 soft-float, 3 for single=precision 208 hard-float; 0 for not tagged or not 209 using any ABIs affected by the 210 differences. */ 211 212 /* Value 1 for general purpose registers only, 2 for AltiVec 213 registers, 3 for SPE registers; 0 for not tagged or not using any 214 ABIs affected by the differences. */ 215 Tag_GNU_Power_ABI_Vector = 8, 216 217 /* Value 1 for ABIs using r3/r4 for returning structures <= 8 bytes, 218 2 for ABIs using memory; 0 for not tagged or not using any ABIs 219 affected by the differences. */ 220 Tag_GNU_Power_ABI_Struct_Return = 12 221 }; 222 223 #endif /* _ELF_PPC_H */ 224